Among the scrolls, ninjutsu made up the overwhelming majority.
Even if all the taijutsu and genjutsu scrolls were combined, they wouldn't amount to even a fraction of the ninjutsu section.
Within the ninjutsu category itself, everything was meticulously subdivided.
Wind, Lightning, Water, Fire, Earth—each chakra nature was clearly separated.
Yuya easily found the training scroll for the Shadow Clone Technique.
After that, he briefly searched through Wind Release and Lightning Release techniques, but didn't find what he was looking for—
any ninjutsu specifically meant for body reinforcement.
It made sense.
Even if such techniques existed, they would likely be classified as secret techniques, not something openly stored here.
So it was impossible to get everything in one step.
Yuya wasn't anxious about it.
Trying to learn too much at once would only lead to shallow understanding.
Right now, he still hadn't even mastered Superhuman Strength.
Once he succeeded with that, he could think about other things.
Moving to the second row of cabinets, Yuya began browsing the taijutsu scrolls.
At first, he hadn't expected them to help much—
—but to his surprise, he found many techniques, principles, and fine details he had never encountered before.
They were extremely useful to him.
The taijutsu scrolls didn't just include attack and defense styles, but also training methods.
Yuya skipped the attack and defense sections entirely.
With his vibration-infused fists, he already possessed both offense and defense in one—there was no need to focus on those.
The training-oriented scrolls, however, were different.
Some of the details they described were actually more refined than the methods Might Duy had taught him.
That wasn't surprising.
Might Duy, for all his mastery of the Eight Gates, was still only a genin, not an ANBU operative.
Most of his taijutsu training methods were self-developed.
Naturally, they couldn't compare to techniques refined through the collective wisdom of countless shinobi.
After reviewing all the taijutsu training scrolls, Yuya felt he had gained a great deal of insight.
He was confident that his future taijutsu training speed would increase by at least ten to twenty percent.
This was the importance of details.
As for the third row—genjutsu—
Yuya didn't even feel like looking.
He gave it a brief glance and turned away immediately.
Scrolls were not allowed to be taken out of the room.
However, they could be copied.
Yuya copied the Shadow Clone training method, along with several things he had memorized, into a blank scroll.
Then he left the ANBU headquarters with it.
Back on the surface of Konoha, Yuya immediately removed the cloak and mask.
"Hah… that place is really suffocating."
He let out a breath and muttered in complaint.
The atmosphere inside the ANBU was indeed oppressive—
almost everyone spoke as little as possible.
The Konoha aboveground and the world below were practically two different realms.
Aboveground—
Sunlight, warmth, noise.
Crowded streets and lively chatter everywhere.
Underground—
Silence.
Oppression.
An ever-present aura of killing intent.
Yet strangely, Yuya found himself feeling a certain respect for the ANBU operatives.
Not for Hiruzen Sarutobi—
—but purely for the ANBU themselves.
For years on end, they hid in the shadows, silently executing missions, openly and secretly protecting Konoha.
It was precisely because of those figures hidden in the darkness that the Village of the Will of Fire could exist in the light.
Where there is light, there is shadow.
Light and darkness oppose each other—
—but also depend on one another.
Taking a deep breath, Yuya pushed those thoughts aside and clenched his fists.
He didn't care about light or darkness.
He only wanted to be the best version of himself.
Yuya's goal was simple—
To stay alive.
Only by surviving could he hope for anything more.
"Next… it's time to train in seclusion.
Before the coming Second Shinobi World War… I'll fight with everything I have to secure a greater chance of survival."
Early Morning
The sun rose above the horizon, driving away the darkness and bathing Konoha in dawn light.
Beneath a sheer rock wall, Yuya arrived early.
He didn't rush straight into training Superhuman Strength.
Instead, he stretched his body and began punching the rock face.
Boom! Boom!
Vibrations rippled outward as he struck again and again.
With each punch, the flesh and blood throughout his body trembled in unison.
Every inch of muscle.
Every layer of skin.
Under the vibration, everything seemed to grow tighter—more refined.
What was shaken loose were impurities and flaws.
Only after sweat poured down his body, soaking him completely, did Yuya finally stop and exhale.
After a short rest—
He took out the scroll Tsunade had given him and began studying it carefully.
Superhuman Strength was, at its core, a method of chakra application.
It required extraordinarily precise chakra control.
In the Naruto world, chakra was a near-universal energy—
It could become Wind, Lightning, Water, Fire, or Earth.
It could also directly amplify physical strength.
Superhuman Strength was the art of using chakra to instantaneously magnify power.
One could also think of it as explosive chakra release.
"The stronger the chakra control, the greater the power.
The higher the quality and quantity of chakra, the stronger the effect."
After carefully reading the scroll, Yuya had a solid grasp of the technique.
In terms of chakra quantity, he currently possessed roughly elite chūnin–level reserves, just barely meeting the threshold required to train Superhuman Strength.
Moreover, his chakra came entirely from the True Eight Gates, making it difficult to increase through conventional means.
However, as the True Eight Gates continued to open, his chakra would increase in a stepwise progression.
So Yuya wasn't worried about his future reserves.
That meant—
What he needed most right now was chakra control.
"Let's try it first… maybe I'll get lucky and succeed right away."
Yuya muttered, still harboring a faint 'I'm a genius' mindset.
Following the instructions, he clenched his fist.
He deliberately did not activate his vibration force.
Instead, he mobilized the chakra within his body.
Chakra flowed rapidly from the two opened gates—
near his heart and lower abdomen—
and gathered into his fist.
Then—
Yuya punched the rock wall.
Silence.
And then… nothing else happened.
"Yeah, I figured it wouldn't be that easy."
Yuya's mouth twitched as he looked at the rock wall, which only bore a few shallow cracks.
That level of power was worse than casually using a bit of vibration force.
When chakra was attached to the fist for Superhuman Strength, any lapse in control caused it to disperse instantly.
Once dispersed, the power couldn't focus in a single direction—
—and without focus, there was no destructive force.
Hah—
Letting out a breath, Yuya wasn't discouraged.
He hadn't really expected to master it immediately.
Training Superhuman Strength demanded exceptional chakra control—
—and Yuya happened to know many methods for improving chakra control.
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